Apparatus for automatic delivery and cutting of tapes



1 1970 SACHIKO KOJIMA 3,494,234

APPARATUS FOR AUTOMATIC DELIVERY AND CUTTING OF TAPES Filed July 20, 1966 2 Sheets-Sheet 1 Fig. 1. 23

SACHIKO KOJIMA Feb. 10, 1970 APPARATUS FOR AUTOMATIC DELIVERY AND CUTTING OF TAPES 2 Sheets-Sheet 2 Filed July 20, 1966 INVENTOR.

United States Patent APPARATUS FOR AUTOMATIC DELIVERY AND CUTTING 0F TAPES Sachiko Kojima, 91 Aza Shiokaki, Oaza Chiryu, Chiryu-cho, Hekikai-gun, Aichi-ken, Japan Filed July 20, 1966, Ser. No. 566,666

Claims priority, application Japan, Aug. 10, 1965,

40/ 48,600 Int. Cl. B26d /20 US. Cl. 83-205 8 Claims ABSTRACT OF THE DISCLOSURE A sizing cutter for pressure sensitive adhesive tape, comprising multiple endless belts braced between a feed roll and delivery roll, the delivery of the tape being elfected by a lever handle controlling the delivery of a definite length of drawn tape by turning of the delivery roll, and a shear-cutting means for smoothly cutting the tape having a fixed cutter portion on the body cooperating with a movable cutter portion mounted to the lever when the lever returns to its rest position.

The present invention relates to an apparatus for automatic delivery and cutting of tapes.

\It is an object of the present invention to provide an apparatus for automatic delivery and cutting of tapes, the apparatus having such structure and mechanism that the tape is set on a drum provided in a frame, and one end of the tape is pulled out and led to a delivery roll. A lever handle is mounted on the same shaft as the delivery roll, and a movable cutter and a ratchet pawl are mounted on the lever handle. A ratchet wheel for engagement with the V pawl is provided on the delivery roll. When the lever handle is pushed down, the delivery roll turns, thereby delivering the tape via a carrier belt and a guide roll toward a fixed cutter, whereupon the tape is cut by the movable cutter and the fixed cutter when the lever moves upwardly. The apparatus is further provided with an idle zone between the ratchet wheel and ratchet pawl. For the tape-delivery by the operation lever, the ratchet pawl engages the ratchet wheel after passing the idle zone, thereby driving the tape-delivery roll.

With this and other objects in view which will become apparent in the following detailed description, the present invention will be clearly understood in connection with the accompanying drawings, in which:

FIGURE 1 is a front elevation of the apparatus without the cover;

FIG. 2 is a right side elevation of FIG. 1;

FIG. 3 is a section along the lines III-III of FIG. 1;

FIG. 4 is a section along the lines IV-IV of FIG. 1; and

FIG. 5 is a perspective view of the lever handle and its fittings.

Referring now to the drawings, the apparatus of the present invention comprises a frame 1 formed on a side wall 2 and a bracket 30. In the left portion of the side wall 2 (left and right are used herein to indicate left and right on the drawings), a projecting shaft 4 is provided, on which a free drum 5 is mounted and a roll of adhesive tape T is set on the drum 5. A bolt and nut 6 fastens the side-wall 2 to the base 3. In the right portion of the frame 1, a projecting shaft or means 7 is similarly provided, on which a free ratchet-disengaging member 9,

3,494,234 Patented Feb. 10, 1970 r. CC

having an angle portion 8, is mounted, one end 10 of which is bolted to the side-wall 2 to prevent rotation. A tape-delivery roll 13 to which a ratchet wheel 11 is fastened on one side by bolts and nuts 12 is also mounted on the shaft 7. The angle portion 8 covers a part of the ratchet wheel 11. Next to the tape-delivery roll 13, a projecting shaft 15 is mounted on the frame 1 and a free guide-roll 16 is mounted on the shaft 15. A carrier band comprising a plurality of endless belts stretches between the guide-roll 16 and the delivery roll 13 in peripheral grooves thereon connecting the rolls, the delivery roll being a principal roll and the guide roll being a subordinate roll.

Behind the frame 1 a lever handle 18 is fixed with a bolt and nut 19 to the shaft 7. The lever handle constitutes an integral body, as shown in FIG. 5, comprising a stop 20, a shaft-hole 21, a cover plate 22 and a handle grip 23. At the side of the lever handle 18, a movable cutter 24 and a ratchet pawl 25 are provided, which are supported by shafts 26 and 27, respectively, and springs 28 and 29 are provided so that the movable cutter 24 and the ratchet pawl 25 may turn in the direction of the arrows.

The movable cutter 24 cooperates with a fixed cutter blade 35 which is fixed to a bracket 30 projecting from the frame 1, and cuts the tape, as will be explained. For effective cutting, it is desirable to provide a small gradient 10 the blade 32 of the movable cutter 24, one end 33 of the blade being higher than the other end 34, and further to bend the end 34 inwardly so as to have a point-contact with the blade 35 of said fixed cutter. A coil spring 36 is tensioned between the frame 1 and the lever handle 18, one end 37 thereof being fixed to the frame 1 and the other end 38 to the lever handle 18, so as to turn the lever handle always counterclockwise, biasing the operating lever into the rest position.

In order to adjust the rotation angle of the handle, brackets 39 and 39' project from the frame 1, and a screw rod 41 fitted with a nut 40 is supported by the brackets. The nut 40 can be driven up and down by turning the knob 42. A movable cover 46 and a fixed cover 47 are installed on the left and right side of the apparatus as shown in FIG. 2 and FIG. 3.

The tape-cutter of the present invention having the above described structure is operated in the following manner:

One end of the adhesive tape T which is set on the drum 5 is pulled out and led via an intermediate roll 43 to the delivery roll 13. The adhesive surface adheres to the periphery 44 of the delivery roll 13. When the handle grip 23 of the lever handle is pushed downwardly (in the direction of the arrow, FIG. 1), the movable cutter 24 moves downwardly with the lever handle 18, but the ratchet pawl 25 slides over the angle 8, and the tape-delivery roll 13 remains stationary. When the g ip 23 is pushed down further, the ratchet pawl goes beyond the angle 8 and is engaged with the ratchet wheel 11, which then begin to rotate together.

Accordingly, the tape-delivery roll turns clockwise and a predetermined definite length of the tape is delivered through outlet 45. When the handle grip is released, the lever handle 18 is pulled upwardly by the coil spring 36, and simultaneously the ratchet pawl 25 turns idlingly over the ratchet wheel 11, moving in the direction opposite to the preceding revolution, and the tape-delivery roll 13 remains stationary. The tape is then cut by the cooperation of the movable cutter 24 and the fixed cutter 31.

The length of the tape to be delivered by one motion of the lever can be adjusted by driving the nut 40 up or down by turning knob 42.

As described above, an apparatus for cutting tape according to the present invention may have a structure where the lever handle is provided on the same shaft as the delivery roll, and the delivery roll is turned by means of the pawl and the ratchet wheel when the lever handle is pushed downwardly, thereby delivering the tape, which tape is cut by the movable cutter during the return pivoting of the lever handle.

Accordingly, a tape cutting apparatus according to the present invention has the characteristic that the delivery and cutting of the tape is performed by one movement, in a very simple structure.

What I Claim is:

1. An apparatus for cutting adhesive tape to a definite length comprising a frame,

said frame adapted to rotatably secure a roll of tape,

a delivery means including a delivery roll rotatably mounted for rotation about a pivot axis to said frame and spaced from said roll of tape for pulling out the front end of the tape from said roll of tape and for delivery thereof,

a ratchet wheel secured to said delivery roll,

a free ratchet-disengaging member secured to said frame about said pivot axis non-rotatably and including an angle portion covering a part of said ratchet wheel,

an operating lever rotatably mounted for pivotal movement about said pivot axis and including mounted thereon a ratchet pawl means for releasably driving said ratchet wheel and thereby said delivery roll during actuation thereof from a rest position to unwind a definite portion of the tape from said roll of tape,

said ratchet pawl means adjacent said angle portion in said rest position of said operating lever, said ratchet pawl means initially upon actuation of said operating lever from said rest position sliding over said angle portion, constituting an idle zone during which initial actuation said delivery roll remains stationary, said ratchet pawl means engaging said ratchet wheel for driving movement when the latter passes beyond said angle portion,

cutting means for cutting said definite portion of said tape comprising a movable cutting means mounted on said operating lever and a fixed cutting means secured to said frame at a position adjacent said movable cutting means when said operating lever returns to its rest position after actuation of said operating lever,

means for adjustably limiting the extent of pivotal movement of said operating lever, and

said fixed and movable cutting means cooperating to out said definite portion of said tape when they are brought operatively together when said operating lever returns to said rest position.

2. An apparatus for cutting adhesive tape to a definite length comprising a frame,

said frame adapted to rotatably secure a roll of tape,

a delivery means including a delivery roll rotatably mounted to said frame and spaced from said roll of tape for pulling out the front end of the tape from said roll of tape and for delivery thereof,

an operating lever including means for releasably driving said delivery roll means upon actuation thereof from a rest position to unwind a definite portion of the tape from said roll of tape,

cutting means for cutting said definite portion of said tape comprising a movable cutting means mounted on said operating lever and a fixed cutting means secured to said frame at a position adjacent said movable cutting means when said operating lever returns to its rest position after actuation of said operating lever,

said fixed and movable cutting means adapted to cooperate to out said definite portion of said tape when they are brought operatively together when said operating lever return to said rest position,

said delivery means further comprises,

a guide roll spaced from said delivery roll and rotatably mounted to said frame,

said delivery roll and said guide roll having a plurality of peripheral grooves,

a carrier band mounted between said delivery roll and said guide roll,

said carrier band comprising a plurality of endless belts disposed in said plurality of peripheral grooves,

said plurality of endless belts being driven by movement of one of said rolls thereby unwinding said definite portion of said tape from said roll of tape, and

said driving means of said operating lever driving said one of said rolls.

3. The apparatus, as set forth in claim 2, wherein said guide roll is disposed adjacent said fixed cutting means.

4. The apparatus, as set forth in claim 2, wherein:

the depth of said peripheral grooves is at least as large as the cross-section diameter of said endless belts, and

at least one of said rolls being indented at its periphery.

5. The apparatus, as set forth in claim 2, wherein said movable cutting means comprises a cutting blade movable with said operating lever.

*6. The apparatus, as set forth in claim 2, wherein said fixed and movable cutting means each include a cutting blade.

7. The apparatus, as set forth in claim 6, wherein:

said movable cutting blade defines a gradient with one end higher than the other end, and

said other end bent inwardly defining a point-contact with said fixed cutting blade.

8. An apparatus for cutting adhesive tape to a definite length comprising a frame,

said frame adapted to rotatably secure a roll of tape,

a delivery means including a delivery roll rotatably mounted to said frame and spaced from said roll of tape for pulling out the front end of the tape from said roll of tape and for delivery thereof,

an operating lever including means for releasably driving said delivery roll means upon actuation thereof from a rest position to unwind a definite portion of the tape from said roll of tape,

cutting means for cutting said definite portion of said tape comprising a movable cutting means mounted on said operating lever and a fixed cutting means secured to said frame at a position adjacent said movable cutting means when said operating lever returns to its rest position after actuation of said operating lever,

said fixed and movable cutting means adapted to cooperate to cut said definite portion of said tape when they are brought operatively together when said operating lever returns to said rest position,

an angle means mounted on said frame,

said releasable driving means comprises,

a ratchet wheel secured to said delivery roll adjacent said angle means,

a ratchet pawl mounted on said operating lever for engaging said ratchet wheel for turning said delivery roll to unwind and deliver said tape upon actuation of said operating lever after said ratchet pawl slides beyond said angle means,

said movable cutting means parting from said fixed cutting means and defining an outlet aperture through which said un ound tape is delivered when said 5 operating lever is actuated thereby preventing said 2,695,058 tape from being blocked. 2,202,377 2,642,936 References Cited 2,955,500

UNITED STATES PATENTS 1,732,636 10/1929 (341111616161. 83-231X 2,260,489 10/1941 Sim 83231 2,601,506 /1952 Erha;d 33-231 Krueger 83--231 Helsel 83223 X Semler 83224 Krueger 832l5 X 5 FRANK T. YOST, Primary Examiner U.S. C1. X.R. 

